Analysis

  • max time kernel
    23s
  • max time network
    24s
  • platform
    windows10-ltsc 2021_x64
  • resource
    win10ltsc2021-20241211-en
  • resource tags

    arch:x64arch:x86image:win10ltsc2021-20241211-enlocale:en-usos:windows10-ltsc 2021-x64system
  • submitted
    09-01-2025 06:22

General

  • Target

    Fps unlocker.7z

  • Size

    922KB

  • MD5

    9012d7fa174b6a7352ba9fd42db0dc20

  • SHA1

    ce1d6ed32b65e90bfe0f0438c45af71965124567

  • SHA256

    418bca7ff00a6c66b907d677b1c476962d0ae01fc1f69f235aa1394d7809750c

  • SHA512

    a3c48426411ee83cfdf5bf3501cfd1a9ec89b20efed7e69750fcb6bc66298713ed948d681a6f6f4fe219e55be7169c525be3122aa762601d930c037c402abafc

  • SSDEEP

    12288:3x6jffKMhw5vvvs7FAbIlAB5rdOOdSJ7n/jX/BxfK8m+nU2D4c5msVhLmoe:BC3XmvHs7FbABPdSJrT/BhKwPmsV9mJ

Malware Config

Extracted

Family

quasar

Version

1.4.1

Botnet

Office04

C2

Inversin-43597.portmap.host:43597

Mutex

80329fd2-f063-4b06-9c7e-8dbc6278c2a3

Attributes
  • encryption_key

    744EA1A385FEBC6DA96387411B7000D77E66B075

  • install_name

    Client.exe

  • log_directory

    Logs

  • reconnect_delay

    3000

  • startup_key

    java updater

  • subdirectory

    SubDir

Signatures

  • Quasar RAT

    Quasar is an open source Remote Access Tool.

  • Quasar family
  • Quasar payload 2 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Executes dropped EXE 3 IoCs
  • Drops file in Windows directory 1 IoCs
  • Browser Information Discovery 1 TTPs

    Enumerate browser information.

  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 1 IoCs

    Adversaries may check for Internet connectivity on compromised systems.

  • Enumerates system info in registry 2 TTPs 3 IoCs
  • Modifies data under HKEY_USERS 2 IoCs
  • Runs ping.exe 1 TTPs 1 IoCs
  • Scheduled Task/Job: Scheduled Task 1 TTPs 3 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary 5 IoCs
  • Suspicious use of AdjustPrivilegeToken 26 IoCs
  • Suspicious use of FindShellTrayWindow 30 IoCs
  • Suspicious use of SendNotifyMessage 26 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs
  • Uses Task Scheduler COM API 1 TTPs

    The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.

Processes

  • C:\Program Files\7-Zip\7zFM.exe
    "C:\Program Files\7-Zip\7zFM.exe" "C:\Users\Admin\AppData\Local\Temp\Fps unlocker.7z"
    1⤵
    • Suspicious behavior: GetForegroundWindowSpam
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of FindShellTrayWindow
    PID:4880
  • C:\Users\Admin\Desktop\Fps unlocker.exe
    "C:\Users\Admin\Desktop\Fps unlocker.exe"
    1⤵
    • Executes dropped EXE
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1296
    • C:\Windows\SYSTEM32\schtasks.exe
      "schtasks" /create /tn "java updater" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\Client.exe" /rl HIGHEST /f
      2⤵
      • Scheduled Task/Job: Scheduled Task
      PID:3664
    • C:\Users\Admin\AppData\Roaming\SubDir\Client.exe
      "C:\Users\Admin\AppData\Roaming\SubDir\Client.exe"
      2⤵
      • Checks computer location settings
      • Executes dropped EXE
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      • Suspicious use of WriteProcessMemory
      PID:1528
      • C:\Windows\SYSTEM32\schtasks.exe
        "schtasks" /create /tn "java updater" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\Client.exe" /rl HIGHEST /f
        3⤵
        • Scheduled Task/Job: Scheduled Task
        PID:3348
      • C:\Windows\system32\cmd.exe
        C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\FTIwECom884w.bat" "
        3⤵
          PID:1812
          • C:\Windows\system32\chcp.com
            chcp 65001
            4⤵
              PID:3080
            • C:\Windows\system32\PING.EXE
              ping -n 10 localhost
              4⤵
              • System Network Configuration Discovery: Internet Connection Discovery
              • Runs ping.exe
              PID:3336
            • C:\Users\Admin\AppData\Roaming\SubDir\Client.exe
              "C:\Users\Admin\AppData\Roaming\SubDir\Client.exe"
              4⤵
              • Executes dropped EXE
              • Suspicious use of AdjustPrivilegeToken
              • Suspicious use of FindShellTrayWindow
              • Suspicious use of SendNotifyMessage
              PID:1856
              • C:\Windows\SYSTEM32\schtasks.exe
                "schtasks" /create /tn "java updater" /sc ONLOGON /tr "C:\Users\Admin\AppData\Roaming\SubDir\Client.exe" /rl HIGHEST /f
                5⤵
                • Scheduled Task/Job: Scheduled Task
                PID:4816
      • C:\Program Files\Google\Chrome\Application\chrome.exe
        "C:\Program Files\Google\Chrome\Application\chrome.exe"
        1⤵
        • Drops file in Windows directory
        • Enumerates system info in registry
        • Modifies data under HKEY_USERS
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of FindShellTrayWindow
        • Suspicious use of SendNotifyMessage
        • Suspicious use of WriteProcessMemory
        PID:5008
        • C:\Program Files\Google\Chrome\Application\chrome.exe
          "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=crashpad-handler "--user-data-dir=C:\Users\Admin\AppData\Local\Google\Chrome\User Data" /prefetch:4 --monitor-self-annotation=ptype=crashpad-handler "--database=C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Crashpad" "--metrics-dir=C:\Users\Admin\AppData\Local\Google\Chrome\User Data" --url=https://clients2.google.com/cr/report --annotation=channel= --annotation=plat=Win64 --annotation=prod=Chrome --annotation=ver=123.0.6312.123 --initial-client-data=0x21c,0x220,0x224,0x1f8,0x228,0x7ffc0102cc40,0x7ffc0102cc4c,0x7ffc0102cc58
          2⤵
            PID:984
          • C:\Program Files\Google\Chrome\Application\chrome.exe
            "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=gpu-process --no-appcompat-clear --gpu-preferences=WAAAAAAAAADgAAAMAAAAAAAAAAAAAAAAAABgAAEAAAA4AAAAAAAAAAAAAAAEAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAGAAAAAAAAAAYAAAAAAAAAAgAAAAAAAAACAAAAAAAAAAIAAAAAAAAAA== --field-trial-handle=1776,i,17123036035523430375,2431914803348828216,262144 --variations-seed-version=20241210-050121.637000 --mojo-platform-channel-handle=1772 /prefetch:2
            2⤵
              PID:1388
            • C:\Program Files\Google\Chrome\Application\chrome.exe
              "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=network.mojom.NetworkService --lang=en-US --service-sandbox-type=none --no-appcompat-clear --field-trial-handle=2192,i,17123036035523430375,2431914803348828216,262144 --variations-seed-version=20241210-050121.637000 --mojo-platform-channel-handle=2248 /prefetch:3
              2⤵
                PID:2464
              • C:\Program Files\Google\Chrome\Application\chrome.exe
                "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=storage.mojom.StorageService --lang=en-US --service-sandbox-type=service --no-appcompat-clear --field-trial-handle=2272,i,17123036035523430375,2431914803348828216,262144 --variations-seed-version=20241210-050121.637000 --mojo-platform-channel-handle=2516 /prefetch:8
                2⤵
                  PID:2296
                • C:\Program Files\Google\Chrome\Application\chrome.exe
                  "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --no-appcompat-clear --lang=en-US --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=6 --field-trial-handle=3108,i,17123036035523430375,2431914803348828216,262144 --variations-seed-version=20241210-050121.637000 --mojo-platform-channel-handle=3128 /prefetch:1
                  2⤵
                    PID:1808
                  • C:\Program Files\Google\Chrome\Application\chrome.exe
                    "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --no-appcompat-clear --lang=en-US --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=5 --field-trial-handle=3148,i,17123036035523430375,2431914803348828216,262144 --variations-seed-version=20241210-050121.637000 --mojo-platform-channel-handle=3168 /prefetch:1
                    2⤵
                      PID:1348
                    • C:\Program Files\Google\Chrome\Application\chrome.exe
                      "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --no-appcompat-clear --lang=en-US --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=7 --field-trial-handle=4432,i,17123036035523430375,2431914803348828216,262144 --variations-seed-version=20241210-050121.637000 --mojo-platform-channel-handle=4448 /prefetch:1
                      2⤵
                        PID:1012
                      • C:\Program Files\Google\Chrome\Application\chrome.exe
                        "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --no-appcompat-clear --lang=en-US --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=8 --field-trial-handle=4272,i,17123036035523430375,2431914803348828216,262144 --variations-seed-version=20241210-050121.637000 --mojo-platform-channel-handle=4288 /prefetch:1
                        2⤵
                          PID:1728
                        • C:\Program Files\Google\Chrome\Application\chrome.exe
                          "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=renderer --no-appcompat-clear --lang=en-US --device-scale-factor=1 --num-raster-threads=4 --enable-main-frame-before-activation --renderer-client-id=9 --field-trial-handle=3276,i,17123036035523430375,2431914803348828216,262144 --variations-seed-version=20241210-050121.637000 --mojo-platform-channel-handle=3360 /prefetch:1
                          2⤵
                            PID:2980
                          • C:\Program Files\Google\Chrome\Application\chrome.exe
                            "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=chrome.mojom.ProcessorMetrics --lang=en-US --service-sandbox-type=none --no-appcompat-clear --field-trial-handle=4652,i,17123036035523430375,2431914803348828216,262144 --variations-seed-version=20241210-050121.637000 --mojo-platform-channel-handle=4860 /prefetch:8
                            2⤵
                              PID:2624
                            • C:\Program Files\Google\Chrome\Application\chrome.exe
                              "C:\Program Files\Google\Chrome\Application\chrome.exe" --type=utility --utility-sub-type=data_decoder.mojom.DataDecoderService --lang=en-US --service-sandbox-type=service --no-appcompat-clear --field-trial-handle=4392,i,17123036035523430375,2431914803348828216,262144 --variations-seed-version=20241210-050121.637000 --mojo-platform-channel-handle=3172 /prefetch:8
                              2⤵
                                PID:2732
                            • C:\Program Files\Google\Chrome\Application\123.0.6312.123\elevation_service.exe
                              "C:\Program Files\Google\Chrome\Application\123.0.6312.123\elevation_service.exe"
                              1⤵
                                PID:424
                              • C:\Windows\system32\svchost.exe
                                C:\Windows\system32\svchost.exe -k LocalSystemNetworkRestricted -p -s NgcSvc
                                1⤵
                                  PID:808

                                Network

                                MITRE ATT&CK Enterprise v15

                                Replay Monitor

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                                Downloads

                                • C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\BrowsingTopicsState

                                  Filesize

                                  649B

                                  MD5

                                  87e478a7c355ea639e0a3e08a0808040

                                  SHA1

                                  633d171ac88869d667c13607a6e19fe097e6e66a

                                  SHA256

                                  f40d425017d6899c7d89e6dfa9b855128e8428016975ca5c8cfe8f83c3f58da7

                                  SHA512

                                  a4bc3c308ecf6cd3c864853284545065f548e36f09a838616c41aff4df67e541e1d49f510c18c9547229838c5c3bd79e0d041ed76e599d789461a09fd7fa7265

                                • C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Network\SCT Auditing Pending Reports

                                  Filesize

                                  2B

                                  MD5

                                  d751713988987e9331980363e24189ce

                                  SHA1

                                  97d170e1550eee4afc0af065b78cda302a97674c

                                  SHA256

                                  4f53cda18c2baa0c0354bb5f9a3ecbe5ed12ab4d8e11ba873c2f11161202b945

                                  SHA512

                                  b25b294cb4deb69ea00a4c3cf3113904801b6015e5956bd019a8570b1fe1d6040e944ef3cdee16d0a46503ca6e659a25f21cf9ceddc13f352a3c98138c15d6af

                                • C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Preferences

                                  Filesize

                                  8KB

                                  MD5

                                  9553d23f21c7e56072771b7584277f30

                                  SHA1

                                  ecf1b5de564f7c9b9da8d8b0f105179fcc48b790

                                  SHA256

                                  947559725541f13f22655655c9c061e95ab85c64ed4f961bebc05569330c47b8

                                  SHA512

                                  7bbebaabb25c5a9a05f2165a89b9f61cb001a2d641952523b8cfc61ad37abcceff248f982303b0413cf8d69d737540e6b8b031ff375f7659495fea2e228a9cc1

                                • C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Local State

                                  Filesize

                                  232KB

                                  MD5

                                  b4d47a00ed4e8d5783b70211a5ddaf4d

                                  SHA1

                                  ef4956702c393c6bc318a5e54983a450ad8f009e

                                  SHA256

                                  2896d3808b2b08ec660428c6b0b3d24a3e2b7ad9055dc17b399f592668f82630

                                  SHA512

                                  3a8aa3554a34258c4b3c12b414a7ea45c8d0725b0e1d184a37f952c11bf32ea88fcfc5629447b0925f96ff3ea01ca2d76fac6d4da00e98a5047d35cacbba5bf9

                                • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\Client.exe.log

                                  Filesize

                                  2KB

                                  MD5

                                  7787ce173dfface746f5a9cf5477883d

                                  SHA1

                                  4587d870e914785b3a8fb017fec0c0f1c7ec0004

                                  SHA256

                                  c339149818fa8f9e5af4627715c3afe4f42bc1267df17d77a278d4c811ed8df1

                                  SHA512

                                  3a630053ae99114292f8cf8d45600f8fe72125795252bf76677663476bd2275be084a1af2fcb4ce30409ba1b5829b2b3ffb6795de46d2a703c3314017a86f1ff

                                • C:\Users\Admin\AppData\Local\Temp\FTIwECom884w.bat

                                  Filesize

                                  207B

                                  MD5

                                  24adb7d3520e624278d5fc80fe6b5680

                                  SHA1

                                  90d7533d5ed20e31349663679031ba180b8b1cfa

                                  SHA256

                                  3e366c46be3b729fbc2d1b946a8bc61f7ad5cabaaf33fd2a5178ec8df4d732b6

                                  SHA512

                                  0fb2d4470a16a98c5fc35d722ae42ffc51a3ce3e1c71cd7cd6e089dbfdd2a36a6c7251a05c3a321bc57bdfa2a7a00f2f945748397863af8b416b7e0bdbcce518

                                • C:\Users\Admin\Desktop\Fps unlocker.exe

                                  Filesize

                                  3.1MB

                                  MD5

                                  bf656c2e5e1e942c41fa918132faa7ab

                                  SHA1

                                  1c2ddd815378e54db9e21dd2e61d89067c94da4f

                                  SHA256

                                  b70c5aea64d75fc98a82b3c88cfecc6c2856f2a4987f4c1212c3fcf866ec9c9f

                                  SHA512

                                  54bef34ab722d69f1d3b7f5316f1fbc10fc629bb134f70eecb6a368330b7b73305ef5fa0b9e83c104e6e679ccd1d6e7f5a20caf4f39e6b03d4940b4ed9540b7d

                                • memory/1296-6-0x00007FFC064A0000-0x00007FFC06F62000-memory.dmp

                                  Filesize

                                  10.8MB

                                • memory/1296-9-0x00007FFC064A0000-0x00007FFC06F62000-memory.dmp

                                  Filesize

                                  10.8MB

                                • memory/1296-5-0x00000000000A0000-0x00000000003C4000-memory.dmp

                                  Filesize

                                  3.1MB

                                • memory/1296-4-0x00007FFC064A3000-0x00007FFC064A5000-memory.dmp

                                  Filesize

                                  8KB

                                • memory/1528-15-0x000000001D250000-0x000000001D302000-memory.dmp

                                  Filesize

                                  712KB

                                • memory/1528-12-0x000000001D140000-0x000000001D190000-memory.dmp

                                  Filesize

                                  320KB